Theo
name, noun, slang ·Moderate ·College level
Definitions
- 1 The amount of a gambler's theoretical losses based on typical play. informal, uncountable
"In a perfect world, a player would know the theo of the machine he's feeding. He would also know the percentage of the theo that the casino is giving back in comps."
- 1 A male given name from Ancient Greek and nickname.
"He has three teeth and two names: Theodore, which is what health visitors call him, and Theo, which is what I call him."
- 2 A diminutive of the female given name Theodora. uncommon
Example
More examples"It is true that every day has its own evil, and its good too. But how difficult must life be, especially farther on when the evil of each day increases as far as worldly things go, if it is not strengthened and comforted by faith. And in Christ all worldly things may become better, and, as it were, sanctified. Theo, woe is me if I do not preach the Gospel; if I did not aim at that and possess faith and hope in Christ, it would be bad for me indeed, but no I have some courage."
Etymology
Short form of Theodore, or of the rare given names Theobald, Theophilus or Theodoric, or of Theodora.
From theoretical.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.